Seasonal Variation of Glycyrrhizin and Isoliquiritigenin Glycosides in the Root of Glycyrrhiza glabra L

The time courses of the glycyrrhizin and isoliquiritigenin glycoside contents in the thickening roots of licorice, Glycyrrhiza glabra L., have been determined. The glycyrrhizin content in 1-year-old roots rapidly increased from October to November, whereas the isoliquiritigenin glycoside content inc...

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Bibliographic Details
Published in:Biological & pharmaceutical bulletin 1998/09/15, Vol.21(9), pp.987-989
Main Authors: HAYASHI, Hiroaki, HIRAOKA, Noboru, IKESHIRO, Yasumasa, YAMAMOTO, Hirobumi, YOSHIKAWA, Takafumi
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
Carbon Radioisotopes
Chalcone - analogs & derivatives
Chalcone - metabolism
Chalcones
Chemical constitution
Economic plant physiology
Fundamental and applied biological sciences. Psychology
General pharmacology
Glycosides - biosynthesis
Glycosides - metabolism
Glycyrrhiza - metabolism
Glycyrrhiza - physiology
Glycyrrhiza glabra L
Glycyrrhizic Acid - metabolism
glycyrrhizin
isoliquiritigenin glycoside
Leguminosae
Medical sciences
Mevalonic Acid - metabolism
Pharmacognosy. Homeopathy. Health food
Pharmacology. Drug treatments
Plant Roots - metabolism
Plants, Medicinal
seasonal variation
Seasons
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Summary:The time courses of the glycyrrhizin and isoliquiritigenin glycoside contents in the thickening roots of licorice, Glycyrrhiza glabra L., have been determined. The glycyrrhizin content in 1-year-old roots rapidly increased from October to November, whereas the isoliquiritigenin glycoside content increased up to October. In 3-year-old plants, although the isoliquiritigenin glycoside content rapidly increased from June to July, the glycyrrhizin content did not show any significant increase from May to August. The glycyrrhizin content increased during the senscence of the aerial parts as well as during the early stage of shoot elongation. The incorporation of [14C]mevalonic acid into the glycyrrhizin fraction by the root segments was high in May, June and September, and low in August and winter. These results indicated that the biosynthesis of glycyrrhizin is differently regulated from that of isoliquiritigenin glycoside in the thickening root of G. glabra.
ISSN:0918-6158
1347-5215
DOI:10.1248/bpb.21.987